How to replace the electrolytic capacitor

Performing minor repairs or modernization of your favorite electronic device in 8 cases out of 10 is required replacing the electrolytic capacitor, since they have the property to dry over time and thus out of the system. And often on hand just are not 100% analog, requiring replacement of the condenser. In this article I will discuss how to choose the right counterparts.

Basic rules for the replacement of the electrolytic capacitor

Important. Independent repair without special knowledge can be dangerous. Take care of yourself!

The electrolytic capacitor is characterized by three main parameters: voltage, capacity and temperature. That's on them and you should pay attention when replacing a failed electrolytic capacitor.

So, you've seen the body of his instrument, had a diagnosis and found that you have a faulty capacitor (often they swell).

Before vypayat determine where his plus and minus where.

In most cases negative terminal is denoted light stripe.

Then simply unsolder it with a soldering iron and replaced.

Ideally, if you have the exact same electrolytic capacitor. But if not, start looking for a replacement.

Selection of the capacitor to replace

First of all pay attention to the voltage. Let's say you need a capacitor at 25 volts. So to put in place such a capacitor at 16 volts or less impossible. You need to find a replacement with the same intensity or higher. That is possible to use 35 V, 50 V, 63 V and m. P.

If those are not you, and repair you need to perform here and now, then it is possible to connect several capacitors in series. Thereby increase the voltage, but the capacity will decrease.

The next parameter to which we pay attention - this is the capacity of the replaced item. Often we change the smoothing capacitors, which are used to smooth the ripple of the rectified voltage, and then working principle, the greater the capacity, the better anti-aliasing. So we choose to replace the same capacity or larger, but not smaller.

If you do not have a suitable replacement options, and the board has enough free space, it is possible to perform a parallel connection of capacitors. In addition such a compound occurs capacitances individual capacitors.

Finally, the third key parameter to which we pay attention to is the maximum operating temperature to which the capacitor is calculated. In this case should also choose a product with similar or higher parameter.

In addition to these three parameters the same, should pay special attention to the ESR - equivalent series resistance.

This parameter is specified in the datasheet for the product and can be measured using RLC - tranzistometra.

Taking into account the above the recommended guidelines, you can easily replace a failed capacitor, and to repair the appliance will serve you for a long time. Like this, then vote it Like and subscribe to not miss a lot of interesting things.

Thanks for attention!